我想创建一个每行具有不同颜色的sppiner,我知道有很多与我的问题类似的解释,但是它们都是Java的,对于我来说这很复杂,我执行这些步骤。
我的代码
val lista = listOf<Mood>(
Mood(resources.getColor(R.color.blue, null), "Color1"),
Mood(resources.getColor(R.color.purple, null), "Color2"),
Mood(resources.getColor(R.color.green, null), "Color3"),
Mood(resources.getColor(R.color.darkred, null), "Color4")
)
val adaptador = MoodArrayAdapter(this, lista)
spinner1.adapter = adaptador
spinner1.onItemSelectedListener = object :
AdapterView.OnItemSelectedListener {
override fun onItemSelected(p0: AdapterView<*>?, p1: View?, p2: Int, p3: Long) {
when (spinner1.selectedItem.toString()) {
"Color1" -> textView.setBackgroundResource(R.color.blue)
"Color2" -> textView.setBackgroundResource(R.color.purple)
"Color3" -> textView.setBackgroundResource(R.color.green)
"Color4" -> textView.setBackgroundResource(R.color.darkred)
}
}
override fun onNothingSelected(p0: AdapterView<*>?) {
TODO("Not yet implemented")
}
}
我想以此方式创建我的微调器
答案 0 :(得分:1)
尽管您尚未共享完整的代码,但这实际上是您要做的。
将数据模型更改为:
data class Mood(val backgroundColor: Color,
val description: String)
将项目布局更改为(尽管对于单个ImageView
布局,您甚至不需要ConstraintLayout
,甚至不需要TextView
,但是我'暂时保留它):
<android.support.constraint.ConstraintLayout
android:id="@+id/rootLayout"
...>
<TextView
android:id="@+id/moodText"
android:layout_width="wrap_content"
android:layout_height="20dp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"/>
</android.support.constraint.ConstraintLayout>
将Adapter
类更改为:
class MoodArrayAdapter(ctx: Context,
moods: List<Mood>) :
ArrayAdapter<Mood>(ctx, 0, moods) {
override fun getView(position: Int, recycledView: View?, parent: ViewGroup): View {
return this.createView(position, recycledView, parent)
}
override fun getDropDownView(position: Int, recycledView: View?, parent: ViewGroup): View {
return this.createView(position, recycledView, parent)
}
private fun createView(position: Int, recycledView: View?, parent: ViewGroup): View {
val mood = getItem(position)
val view = recycledView ?: LayoutInflater.from(context).inflate(
R.layout.demo_spinner,
parent,
false
)
view.rootLayout.setBackgroundColor(mood.backgroundColor)
view.moodText.text = mood.description
return view
}
}
最后,将微调器的适配器设置为:
moodSpinner.adapter = MoodArrayAdapter(
this,
listOf(
Mood(Color.RED, "Angry"),
Mood(Color.GRAY, "Happy"),
Mood(Color.CYAN, "Playful"),
Mood(Color.GREEN, "Wondering")
)
)
现在,您可以更改适合您的单词“ mood”的变量/名称。此外,我正在传递颜色,您可以将Color.ValueOf(r,g,b)
用于自定义颜色,也可以将数据模型中DataType
的{{1}}更改为backgroundColor
并从中传递颜色资源int
。
编辑-> 要访问此颜色资源,请以:p
colors.xml
因此,将您的代码相应地更改为:
From Activity -> Mood(resources.getColor(R.color.blue,null), "Angry")
From Fragment -> Mood(context.resources.getColor(R.color.blue,null), "Angry")